Trip from Spokane Valley, WA to Cosmopolis, WA

Drive Time

7h 20m

Distance

378.9 mi

610 km

Drive Score

8/10

Great drive

Same Day?

Yes, doable

Fuel Cost

$80

one way

EV Charging

Excellent

15 DC fast

Best Time to Leave

Save up to 32 min

4 AM

7h 10m ★

6 AM

7h 21m

8 AM

7h 42m

10 AM

7h 28m

12 PM

7h 26m

3 PM

7h 29m

5 PM

7h 41m

8 PM

7h 14m

Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.

Best Time Drive vs Fly

Google Maps Waze Apple Maps

Download GPX

Cosmopolis, WA

Boris Hamer

Trip Overview

The drive from Spokane Valley, WA to Cosmopolis, WA covers 378.9 miles and takes about 7h 20m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.

The route leans on I 90, I 5, State Route 18 for much of the mileage, and the overall profile is highway-focused drive. The longest uninterrupted segment is about 252 miles on I 90. At current regular gas prices, budget about $79.52 one way before food or hotel costs.

Trip Pace

Same-day drive is realistic

A same-day return is possible, but it will make for a full day on the road.

Break Rhythm

2 planned breaks

Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.

Midpoint

189.4 miles from Spokane Valley, WA

A natural place for your longest stop of the day , about 3h 27m into the drive .

Drive Character

This is a 7h 20m highway drive covering 378.9 miles, with most of the trip on I 90 and I 5. The longest continuous stretch is about 252 miles on I 90.

Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.

There are about 27 navigation steps in the underlying route data, so the final approach matters more than the middle miles.

I 90 is the longest continuous segment at about 252 miles.

How Hard Is This Drive?

This is a straightforward highway drive that stays mostly on I 90 and I 5. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.2 miles in near East Montgomery Avenue.

Route Complexity 10/10

High effort - long or complex enough to need steady focus all day

This is a demanding drive. With 19 significant decision points across 378.9 miles, you will need to stay alert — especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.

Where does it get tricky?

The main spots that need attention: at 0.2 miles (East Montgomery Avenue): Lane positioning matters here; at 263.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 264 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.

Critical Maneuvers

5 of 19 key points

These are the spots where you need to pay the most attention. Preview them before you drive.

0.2 mi into trip | ~0m in | East Montgomery Avenue

Turn left onto East Montgomery Avenue

Lane positioning matters here

Use the left lane.

263.8 mi into trip | ~4h 48m in

Take the exit toward WA 18 West: Auburn

Exit ramp - move to the correct lane early. Lane positioning matters here

Use the slight right lane. Exit 25 Toward WA 18 West: Auburn

264 mi into trip | ~4h 48m in

Keep slight left at fork toward SR 18 west, Snoqualmie Parkway: Auburn, Tacoma

Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one

Use the straight / left / right lanes. Toward SR 18 west, Snoqualmie Parkway: Auburn,...

291.2 mi into trip | ~5h 23m in

Take the exit toward I 5: Seattle, Tacoma

Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one

Use the straight / slight right lanes. Toward I 5: Seattle, Tacoma

291.7 mi into trip | ~5h 24m in

Keep slight left at fork toward I 5 South, WA 161: Enchanted Parkway South, Tacoma

Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one

Use the straight lane. Toward I 5 South, WA 161: Enchanted Parkway Sou...

Towns Along This Route

Between Spokane Valley, WA and Cosmopolis, WA, road signs point toward Snoqualmie Parkway: Auburn, Tacoma and Port Angeles.

Snoqualmie Parkway: Auburn

264 mi in | ~4h 48m

Tacoma

264 mi in | ~4h 48m

Port Angeles

329.3 mi in | ~6h 12m

Main Roads

Road	Distance	Duration
I 90	252 mi	4h 32m
I 5	36.8 mi	45m
State Route 18	26.7 mi	34m
WA 8	21 mi	26m
Spokane Valley Freeway	11.3 mi	14m
Olympic Highway	10 mi	12m
US 101	9.6 mi	13m
State Route 107	7 mi	12m

Longest stretch: I 90 — 252 mi, about 4h 32m

Turn-by-Turn Driving Directions

Step-by-step road directions between Spokane Valley, WA and Cosmopolis, WA.

Start on WA 27

0.2 mi · 27 sec · North Pines Road

Use the left lane.

Turn left onto East Montgomery Avenue

155 ft · 6 sec · East Montgomery Avenue

Use the left lane.

Take the ramp

0.3 mi · 42 sec

Merge onto I 90

11 mi · 14 min · Spokane Valley Freeway

Keep slight left at fork onto I 90; US 395

57 mi · 1 hr · I 90; US 395

Keep slight left at fork onto I 90

195 mi · 3 hr 31 min · I 90

Use the straight / slight right lanes.

Take the exit

0.2 mi · 30 sec

Exit 25 Toward WA 18 West: Auburn Use the slight right lane.

Keep slight left at fork

448 ft · 13 sec

Toward SR 18 west, Snoqualmie Parkway: Auburn, Tacoma Use the straight / left / right lanes.

Merge onto WA 18

0.3 mi · 25 sec · Snoqualmie Parkway

Continue on WA 18

27 mi · 34 min · State Route 18

Use the straight / slight right lanes.

Take the exit

0.6 mi · 1 min

Toward I 5: Seattle, Tacoma Use the straight / slight right lanes.

Keep slight left at fork

0.6 mi · 1 min

Toward I 5 South, WA 161: Enchanted Parkway South, Tacoma Use the straight lane.

Keep slight left at fork

0.2 mi · 31 sec

Toward I 5 South: Tacoma

Merge onto I 5

7.2 mi · 9 min · I 5

Use the straight / slight right lanes.

Keep slight right at fork onto I 5

30 mi · 36 min · I 5

Use the straight / slight right lanes.

Take the exit

0.5 mi · 34 sec

Toward US 101: Aberdeen, Port Angeles

Continue on US 101

5.5 mi · 6 min · US 101

Keep slight left at fork onto WA 8

21 mi · 26 min · WA 8

Continue on US 12

10 mi · 12 min · Olympic Highway

Take the exit

0.3 mi · 41 sec

Toward WA 107: Montesano, Raymond

Turn left onto WA 107

1.0 mi · 1 min · South Main Street

Continue on WA 107

7.0 mi · 12 min · State Route 107

Take the ramp

187 ft · 5 sec

Merge onto US 101

4.0 mi · 6 min · US 101

Turn left onto E Street

0.1 mi · 24 sec · E Street

Turn right onto 3rd Street

277 ft · 9 sec · 3rd Street

Arrive at destination

3rd Street

Trip Plan

Morning Departure

Start early — leave by 6-7 AM to arrive at a reasonable hour.

Evening Departure

This is a long drive — plan for a morning departure or consider splitting it into two days.

You can normally do this drive in one day.

Plan roughly 2 meaningful breaks for fuel, food, and rest.

The halfway point lands around 189.4 miles from Spokane Valley, WA, or about 3h 27m into the drive.

The longest continuous stretch on this route runs about 252 miles.

This is a comfortable same-day trip.

Departure

Before you leave

Start with fuel, water, and navigation already sorted so the first hour feels easy.

First stop

Around 83 miles or 1h 32m in

Use this first pause for coffee, a restroom break, and a quick traffic check ahead.

Halfway reset

Around 189.4 miles or 3h 27m in

This is the best place for your longest stop, a real meal, and a full fuel check.

Final approach

Final hour starts around 5h 59m

Traffic, exits, and arrival timing usually matter more near Cosmopolis, WA than in the middle of the route.

Before You Leave

Open the route before leaving Spokane Valley, WA so your first major turns are already loaded.

Leave with enough water and a charging cable within reach, not packed away.

Check your fuel range against the first long segment, especially if you are starting outside city service areas.

Pick one backup stop option before the midpoint in case traffic changes your pacing.

Day 1

Settle into the route from Spokane Valley, WA

This is one driving day of about 378.9 miles and 7h 20m.

Your first comfortable stop window is around 83 miles from Spokane Valley, WA.

This route can stay practical as a one-day drive if traffic stays reasonable.

Plan about 2 real breaks rather than only quick fuel stops.

The longest stretch is on I 90 for about 252 miles.

Where to Stop

Rest stops, refuel points, and overnight suggestions along this route.

Halfway Point

Midpoint

About 189.4 mi from Spokane Valley, WA · 3h 27m into the drive

Mid-route town

Meal stop

Redmond, WA

189 mi into the route

Best for: Lunch, fuel, and a longer reset

This sits close to the middle of the route, so it works well for the longest stop of the day.

Pacing Suggestions

Moses Lake, WA

Fuel and coffee

A short stop after about 83 miles helps settle the day before fatigue starts building.

Monroe, WA

Meal break

The midpoint is around 189.4 miles from Spokane Valley, WA, which is a good place for a longer meal and fuel stop.

Before the longest stretch

Fuel check

Top up before I 90 if your tank is already low. That segment runs about 252 miles.

Arriving in Cosmopolis, WA

The final approach into Cosmopolis, WA usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.

Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Cosmopolis, WA.

After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.

These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.

National Parks Near This Route

Worth a detour if your schedule allows.

Klondike Gold Rush - Seattle Unit National Historical Park

National Historical Park

Seattle flourished during and after the Klondike Gold Rush. Merchants supplied people from around the world passing through this port city on their way to a remarkable adventure in the Yukon Territory...

19 mi from route ~48 min detour Free near mile 274.4

View on nps.gov

Park data from the National Park Service API. Alerts update every 2 hours.

Fuel & Cost

Regular Gas

$79.52 one way

$159.05 round trip

$5.33/gal 25.4 MPG avg 133 kg CO₂

Fuel Type	$/gal	One Way	Round Trip
midgrade	$5.57	$83.04	$166.09
premium	$5.77	$86.09	$172.18
diesel	$5.64	$84.18	$168.36

No toll roads detected on this route.

Estimated Trip Cost (one way, 1 person)

Fuel

$80

Meals

$25–$50

Total

$105–$130

Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.

Estimated CO2 emission: 132.6 kg one way. Prices: EIA weekly data, 2026-04-06.

EV Charging Along Route

15 DC fast chargers · Coverage: excellent

Walmart 2539 (Spokane Valley, WA)

Spokane Valley, WA

Electrify America

8 DCFC

Spokane, WA

Spokane Valley, WA

RIVIAN_ADVENTURE

6 DCFC

2409 AutoNation Acura Spokane Valley

Spokane Valley, WA

Blink Network

6 DCFC

Kroger-Fred Meyer 657 (Spokane, WA)

Spokane, WA

Electrify America

6 DCFC

West Valley School

8900 E. Buckeye Ave., WA

EV Connect

2 DCFC

Avista - Moran Prairie STA DCFC

Spokane, WA

FLO

2 DCFC

The Hive

Spokane, WA

EV Connect

2 DCFC

Avista - Goodwill DCFC

Spokane, WA

FLO

2 DCFC

EV Connect: 6 FLO: 4 Electrify America: 2 RIVIAN_ADVENTURE: 1 Blink Network: 1 Non-Networked: 1

Station data from NREL Alternative Fuel Stations database.

Driving Electric?

About $40 in charging · 1 stop · 67% less CO₂

Vehicle Type	kWh	Stops	DC Fast	Home Charge
Average EV	113.7	1	$39.78	$18.19
Efficient EV	94.7	1	$33.15	$15.16
EV Truck/SUV	151.6	1	$53.05	$24.25

Gas CO2

133 kg

EV CO2

44 kg (67% less)

Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.

DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.

Travel Intel

Current conditions at both ends of the drive.

Forecast data refreshed 3 days ago

Origin

Spokane Valley, WA

Morning in Spokane Valley on Monday

Local time

9:44 AM

PDT

Current temp

33°F

Unavailable

Live forecast

Destination

Cosmopolis, WA

Morning in Cosmopolis on Monday

Local time

9:44 AM

PDT

Current temp

38°F

Unavailable

Live forecast

Seasonal Notes

Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.

Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.

Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.

Time zone

Same local time

Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.

Temperature spread

5 degrees warmer at arrival

A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.

Road read

7h 20m on the road

Start early — leave by 6-7 AM to arrive at a reasonable hour.

Weather data from the National Weather Service. Conditions may change; check closer to your travel date.

Frequently Asked Questions

The drive from Spokane Valley, WA to Cosmopolis, WA covers 378.9 miles and takes about 7h 20m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.

The main roads are I 90, I 5, State Route 18. Most of the drive stays on highways, so watch for ramps and exits.

This is a comfortable same-day trip.

The midpoint is about 189.4 miles from Spokane Valley, WA. Look for rest areas, gas stations, or food options near the halfway mark.

At current regular gas prices, expect to spend about $79.52 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.

Start early — leave by 6-7 AM to arrive at a reasonable hour. This is a long drive — plan for a morning departure or consider splitting it into two days.

Plan about 2 meaningful breaks for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.

Between Spokane Valley, WA and Cosmopolis, WA, road signs point toward Snoqualmie Parkway: Auburn, Tacoma and Port Angeles.

Was this route helpful?

Thanks for your feedback!

Your tip has been submitted. Thanks!

/500

Explore More

Return Trip

Cosmopolis, WA to Spokane Valley, WA

Plan the drive back the other way.

378.5 mi 7h 20m

Explore more options from Spokane Valley, WA or browse trips ending in Cosmopolis, WA.

Looking for more statewide routes? Browse WA road trips.

Explore maps for Spokane Valley, WA or Cosmopolis, WA on MapSof.net.

Trip from Spokane Valley, WA to Cosmopolis, WA

Best Time to Leave

Trip Overview

Drive Character

How Hard Is This Drive?

Critical Maneuvers

Towns Along This Route

Main Roads

Turn-by-Turn Driving Directions

Trip Plan

Before You Leave

Where to Stop

Pacing Suggestions

Arriving in Cosmopolis, WA

National Parks Near This Route

Klondike Gold Rush - Seattle Unit National Historical Park

Fuel & Cost

Travel Intel

Spokane Valley, WA

Cosmopolis, WA

Same local time

5 degrees warmer at arrival

7h 20m on the road

Frequently Asked Questions

Was this route helpful?

Explore More

Continue From Cosmopolis, WA

More from Spokane Valley, WA

More trips to Cosmopolis, WA